'use strict'
const path = require('path')
const defaultSettings = require('./src/settings.js')

function resolve(dir) {
  return path.join(__dirname, dir)
}

const name = defaultSettings.title || 'vue Admin Template' // page title

const isProd = process.env.NODE_ENV === 'production'
// 样式和JavaScript脚本的第三方cdn连接
const cdn = {
  css: [
    // '//cdn.jsdelivr.net/npm/element-ui@2.15.7/lib/theme-chalk/index.css'
    '//cdn.staticfile.org/element-ui/2.15.8/theme-chalk/index.min.css'
  ],
  js: [
    // 七牛cdn
    '//cdn.staticfile.org/vue/2.6.14/vue.min.js',
    '//cdn.staticfile.org/vue-router/3.5.3/vue-router.min.js',
    '//cdn.staticfile.org/vuex/3.6.2/vuex.min.js',
    // '//cdn.staticfile.org/xlsx/0.18.5/xlsx.full.min.js',
    '//cdn.staticfile.org/axios/0.26.1/axios.min.js',
    '//cdn.staticfile.org/element-ui/2.15.8/index.min.js',

    // '//cdn.jsdelivr.net/npm/vue@2.6.12/dist/vue.min.js',
    // '//cdn.jsdelivr.net/npm/vue-router@3.5.1/dist/vue-router.min.js',
    // '//cdn.jsdelivr.net/npm/vuex@3.6.2/dist/vuex.min.js',
    // '//cdn.jsdelivr.net/npm/axios@0.21.1/dist/axios.min.js',
    // '//cdn.jsdelivr.net/npm/element-ui@2.15.7/lib/index.js',

    '//cdn.staticfile.org/echarts/5.3.3/echarts.min.js'
  ]
}
// 外部引入的对象与内部引用时的对象配置
// 例如：{vue: 'Vue'}，vue为内部import 'vue'的vue对象，Vue为外部引入后的对应的全局变量。
const externals = {
  vue: 'Vue',
  'vue-router': 'VueRouter',
  vuex: 'Vuex',
  axios: 'axios',
  'echarts': 'echarts',
  'element-ui': 'ELEMENT'
}
// If your port is set to 80,
// use administrator privileges to execute the command line.
// For example, Mac: sudo npm run
// You can change the port by the following methods:
// port = 9528 npm run dev OR npm run dev --port = 9528
const port = process.env.port || process.env.npm_config_port || 9528 // dev port

// All configuration item explanations can be find in https://cli.vuejs.org/config/
module.exports = {
  /**
   * You will need to set publicPath if you plan to deploy your site under a sub path,
   * for example GitHub Pages. If you plan to deploy your site to https://foo.github.io/bar/,
   * then publicPath should be set to "/bar/".
   * In most cases please use '/' !!!
   * Detail: https://cli.vuejs.org/config/#publicpath
   */
  publicPath: '/',
  outputDir: 'dist',
  assetsDir: 'static',
  lintOnSave: process.env.NODE_ENV === 'development',
  productionSourceMap: false,
  devServer: {
    port: port,
    open: true,
    // overlay: {
    //   warnings: false,
    //   errors: true
    // },
    proxy: {
      // 配置跨域(不建议使用，建议直接使用绝对地址，后台做好跨域处理)
      '/admin': {
        // target: 'https://0000.iot.wtch1.com/', // 这里后台的地址模拟的;应该填写你们真实的后台接口
        target: 'http://127.0.0.1:9001', // 这里后台的地址模拟的;应该填写你们真实的后台接口
        // ws: true,
        // changOrigin: true, // 允许跨域
        pathRewrite: {
          '^/admin': '/admin'
        } // 请求的时候使用这个api就可以
      }
    }
    // before: require('./mock/mock-server.js')
  },
  configureWebpack: {
    // 外部扩展的配置，告诉webpack,在production模式下，才引入外部的cdn资源，并且不要把对应的模块打包到vender的公共包里面
    externals: isProd ? externals : {},
    // provide the app's title in webpack's name field, so that
    // it can be accessed in index.html to inject the correct title.
    name: name,
    resolve: {
      alias: {
        '@': resolve('src')
      }
    }
  },
  chainWebpack(config) {
    if (isProd) {
      config.plugin('html').tap((args) => {
        args[0].cdn = cdn
        return args
      })
    }

    // it can improve the speed of the first screen, it is recommended to turn on preload
    config.plugin('preload').tap(() => [
      {
        rel: 'preload',
        // to ignore runtime.js
        // https://github.com/vuejs/vue-cli/blob/dev/packages/@vue/cli-service/lib/config/app.js#L171
        fileBlacklist: [/\.map$/, /hot-update\.js$/, /runtime\..*\.js$/],
        include: 'initial'
      }
    ])

    // when there are many pages, it will cause too many meaningless requests
    config.plugins.delete('prefetch')

    // set svg-sprite-loader
    config.module.rule('svg').exclude.add(resolve('src/icons')).end()
    config.module
      .rule('icons')
      .test(/\.svg$/)
      .include.add(resolve('src/icons'))
      .end()
      .use('svg-sprite-loader')
      .loader('svg-sprite-loader')
      .options({
        symbolId: 'icon-[name]'
      })
      .end()

    config.when(process.env.NODE_ENV !== 'development', (config) => {
      config
        .plugin('ScriptExtHtmlWebpackPlugin')
        .after('html')
        .use('script-ext-html-webpack-plugin', [
          {
            // `runtime` must same as runtimeChunk name. default is `runtime`
            inline: /runtime\..*\.js$/
          }
        ])
        .end()
      config.optimization.splitChunks({
        chunks: 'all',
        cacheGroups: {
          libs: {
            name: 'chunk-libs',
            test: /[\\/]node_modules[\\/]/,
            priority: 10,
            chunks: 'initial' // only package third parties that are initially dependent
          },
          elementUI: {
            name: 'chunk-elementUI', // split elementUI into a single package
            priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
            test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
          },
          commons: {
            name: 'chunk-commons',
            test: resolve('src/components'), // can customize your rules
            minChunks: 3, //  minimum common number
            priority: 5,
            reuseExistingChunk: true
          }
        }
      })
      // https:// webpack.js.org/configuration/optimization/#optimizationruntimechunk
      config.optimization.runtimeChunk('single')
    })
  }
}